Effect of Formulating Diets Based on Rice Bran, Palm Kernel Meal and Their Combination on Feed Intake, Digestibility and Liveweight Gain and Income Over Feed Cost of Donggala Bulls Fed Corn Stover Marsetyo (a*), I Wayan Sulendre (a), Yohan Rusiyantono (a)
a) Department of Animal Science, Tadulako University, Central Sulawesi, Indonesia
*marsetyomarsetyo[at]yahoo.co.uk
Abstract
This study was aimed to examine the effect of addition of rice bran and palm kernel meal or their combination on feed intake, digestibility, daily liveweight gain, income over feed cost of Donggala bulls fed corn stover. Donggala bulls average initial liveweight 189 kg were stratified on liveweight and randomly allocated to 4 treatments in a completely randomised block design. The dietary treatments were (1) corn stover ad libitum (CS), (2) CS plus rice bran (RB) (3), CS plus palm kernel meal (PKM), and (4) CS plus mixture of RB and PKM. All supplements were offered at level 1 body weight dry matter. Each treatment was repeated 7 times. Water drinking was available ad libitum. The experiment consisted of 2 and 14 weeks for adaptation and collection periods respectively. Parameter measured include feed intake, feed digestibility, ADG and IOFC. Donggala bulls receiving RB, PKM and RBPKM consumed 0.88, 0.70 and 0.87 of their total allocation, respectively. Supplementation significantly (P<0.05) decreased basal diet DM intake but increased total DM intake, DM digestibility, ADG, IOFC. Basal diet intake of bulls supplemented with RB, PKM and RBPKM decreased 13.95, 20.16 and 10.85, respectively. Bulls supplemented RBPKM had the highest (P<0.05) total DM intake, DM digestibility, ADG, IOFC with value 3.16, 65.74 and 0.67 kg/d, IDR 26937/bull, respectively. It was concluded that inclusion of combination of energy and protein can boost ADG and profitability of Donggala bulls fed low quality roughage.
